Tautomerism of guanidines studied by 15N NMR: 2-hydrazono-3-phenylquinazolin-4(3H)-ones and related compounds

Ion Ghiviriga; Bahaa El Dien M. El-Gendy; Peter J. Steel; Alan R. Katritzky

doi:10.1039/b907577a

Tautomerism of guanidines studied by ¹⁵N NMR: 2-hydrazono-3-phenylquinazolin-4(3H)-ones and related compounds

Ion Ghiviriga, Bahaa El Dien M. El-Gendy, Peter J. Steel, Alan R. Katritzky

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

2-Hydrazono-3-phenylquinazolin-4(3H)-ones 11a-i are shown by ¹⁵N NMR to exist in DMSO solution predominantly as the imino tautomers B and not the amino tautomers A. 2-Hydrazino-benzimidazole derivative 12 and 2-hydrazino-4,6-dimethylpyrimidine derivative 13 were found to exist predominantly as the amino tautomers.

Original language	English
Pages (from-to)	4110-4119
Number of pages	10
Journal	Organic and Biomolecular Chemistry
Volume	7
Issue number	19
DOIs	https://doi.org/10.1039/b907577a
State	Published - 2009

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abstract = "2-Hydrazono-3-phenylquinazolin-4(3H)-ones 11a-i are shown by 15N NMR to exist in DMSO solution predominantly as the imino tautomers B and not the amino tautomers A. 2-Hydrazino-benzimidazole derivative 12 and 2-hydrazino-4,6-dimethylpyrimidine derivative 13 were found to exist predominantly as the amino tautomers.",

author = "Ion Ghiviriga and El-Gendy, {Bahaa El Dien M.} and Steel, {Peter J.} and Katritzky, {Alan R.}",

year = "2009",

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journal = "Organic and Biomolecular Chemistry",

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T2 - 2-hydrazono-3-phenylquinazolin-4(3H)-ones and related compounds

AU - Ghiviriga, Ion

AU - El-Gendy, Bahaa El Dien M.

AU - Steel, Peter J.

AU - Katritzky, Alan R.

PY - 2009

Y1 - 2009

N2 - 2-Hydrazono-3-phenylquinazolin-4(3H)-ones 11a-i are shown by 15N NMR to exist in DMSO solution predominantly as the imino tautomers B and not the amino tautomers A. 2-Hydrazino-benzimidazole derivative 12 and 2-hydrazino-4,6-dimethylpyrimidine derivative 13 were found to exist predominantly as the amino tautomers.

AB - 2-Hydrazono-3-phenylquinazolin-4(3H)-ones 11a-i are shown by 15N NMR to exist in DMSO solution predominantly as the imino tautomers B and not the amino tautomers A. 2-Hydrazino-benzimidazole derivative 12 and 2-hydrazino-4,6-dimethylpyrimidine derivative 13 were found to exist predominantly as the amino tautomers.

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U2 - 10.1039/b907577a

DO - 10.1039/b907577a

M3 - Article

C2 - 19763319

AN - SCOPUS:70349269183

SN - 1477-0520

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JO - Organic and Biomolecular Chemistry

JF - Organic and Biomolecular Chemistry

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Tautomerism of guanidines studied by ¹⁵N NMR: 2-hydrazono-3-phenylquinazolin-4(3H)-ones and related compounds

Abstract

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